12113113123 has 4 divisors (see below), whose sum is σ = 12116198488. Its totient is φ = 12110027760.

The previous prime is 12113113091. The next prime is 12113113127. The reversal of 12113113123 is 32131131121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12113113123 - 2⁵ = 12113113091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12113113123.

It is not an unprimeable number, because it can be changed into a prime (12113113127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1536786 + ... + 1544647.

It is an arithmetic number, because the mean of its divisors is an integer number (3029049622).

Almost surely, 2^12113113123 is an apocalyptic number.

12113113123 is a deficient number, since it is larger than the sum of its proper divisors (3085365).

12113113123 is an equidigital number, since it uses as much as digits as its factorization.

12113113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085364.

The product of its digits is 108, while the sum is 19.

Adding to 12113113123 its reverse (32131131121), we get a palindrome (44244244244).

The spelling of 12113113123 in words is "twelve billion, one hundred thirteen million, one hundred thirteen thousand, one hundred twenty-three".